TM 9-1829A Ordnance Maintenance: Speedometers, Tachometers, and Recorders. 1944-04-15
"The instructions contained in this manual are for the information and guidance of personnel charged with the repair and rebuilding of speedometers, tachometers, recorders, and related drive equipment. These instructions are supplementary to those in the field manuals and technical manuals prepared for the using arms. This manual does not contain information which is intended primarily for the using arms, since such information is available to ordnance maintenance personnel in 100-series TM's or FM's."
Digitized by the Combined Arms Research Library Digital Library, US Army Combined Arms Center.
http://cgsc.cdmhost.com/cdm/Technical manual
Includes index